发明名称 Apparatus for controlling movement of flowable particulate material
摘要 Disclosed is a valve for permitting passage of a flowable granular material from a pile of the material in a first direction while resisting the flow in a second direction. The valve comprises a valve housing defining a passageway (2) for flow therethrough, the passageway having an upper-passageway-defining surface (4), a lower passageway-defining surface (6), and first and second passageway-defining surfaces (8, 10) between the upper and lower surfaces. The upper and lower surfaces diverge and are structured to provide an angle of repose to the material from the pile.
申请公布号 NZ563219(A) 申请公布日期 2010.12.24
申请号 NZ20060563219 申请日期 2006.05.19
申请人 ELSIE SPRY 发明人 SPRY, WILLIAM J
分类号 E02B3/04;E02D3/02;E02D29/02 主分类号 E02B3/04
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